Its more like battle bots until the site owner adds captchas and other simple human test to at least slow it down. I have the impression he doesnt care as long as he gets his cut (I wouldnt be surprised if he added more potatoes without warning anyone to increase profit).

He might as well raise the baseline price of the potatoes to 100LTC which is where the bots seem to sleep.

Luckily someone could make a copy site and only take a smaller percent of a cut on the dead potatoes which right now is really high
(the highest profit potato gives 50% to the site owner and 100% to the potato seller) .eBay/paypal eat your heart out.